Master Station Duplication Error Canceling Function - Mitsubishi Electric MELSEC-Q Series User Manual

8.3.10

Master station duplication error canceling function

Even if a master station duplication error has been detected, the error can be cleared without resetting the CPU
module or powering off and on the system.
Before using this function, check the version of the master/local module. (
(1) How to cancel the error
1.
Remove the cause of a master station duplication error.
Another master station may exist on the same line, or the line may be being influenced by noise.
2.
Turn on Master station duplication error canceling request (SB0007).
(2) Link special relays (SBs) and a link special register (SW) related to the master
station duplication error canceling function
Link special relays (SBs) and a link special register (SW) related to the master station duplication error canceling
function are listed below.
Values in parentheses are buffer memory addresses and bit numbers.
• Master station duplication error canceling request (SB0007) (5E0
• Master station duplication error canceling acknowledgement (SB0057) (5E5
• Master station duplication error canceling complete (SB0058) (5E5
• Master station duplication error canceling result (SW0057) (657
(3) Timing chart of the link special relays (SBs) and link special register (SW)
Master station duplication error
canceling request (SB0007)
Master station duplication error
canceling acknowledgement (SB0057)
Master station duplication error
canceling complete (SB0058)
Master station duplication error
canceling result (SW0057)
172
ON
OFF
ON
OFF
Line check
OFF
Page 399, Appendix 6 (2))
, b7)
H
, b7)
H
, b8)
H
)
H
Executed by the master/local module
Executed on the program
ON
Result